A simple code // find a prime number

the Main void static ()
{
  int n-;
  int SUM = 0;
      Console.Write ( "Enter a number:");
    n-= the int.Parse (Console.ReadLine ());
   for (int I =. 1; I <= n-; I ++)
   {
    IF (n-I% == 0)
    {
    SUM + =. 1;
    }
   }  
    IF (SUM == 2)
       {
       Console.WriteLine ( "the result is not a prime number");
    }
    the else
    {
    Console.WriteLine ( "result prime ");
    }